Lock



June 11, 1940. y L. M, DYSON I 2,204,345

' LOCK y Filed Aug. l5, 1939 Patented June 11, 1940 UNITED STATES PATENT `()FFICE 11400K l Louis M. Dyson, l.New Britain, Conn., assig-nor to The Americanr :Hardware Corporation, New Britain, Conn., ya corporation of Connecticut f applicatipnncgust 15, 1939, serial No. 290,215

A Y "solaims, (C1. vii-"38)y My invention vrelates more particularly to that class of locks known as padlocks, and an object of my invention, among others, is the production of a lock of this type that' shall be extremely simple in construction and that may be produced at a minimum cost.

One form of a padlock embodying my invention and in the construction and use of which the objects herein set out, as lwell as others, may be attained is illustrated in the accompanying draw;

` ing, in Which- Figure 1 is a face viewL of the lock.

Figure 2 is a View looking at the end for receiving the key.

Figure 3 is a view of the opposite end with the arms of the shackle cut in two.

Figure 4 is an edge view.

Figure 5 is a View on enlarged scale illustrating v the interior mechanism of the lock, one of the case sections being removed, and the shackle arms being broken oi.

Figure 6 is a similar view illustrating the operation of the key in releasing the shackle.

Figure? isa view in section on a plane denoted by the dotted line I-I of Fig. 5.

Figure 8 is a View in section on a plane denoted .I bythe dotted line 8-8 of Fig. 5.

Figure 9 is a View in section on a plane denoted by the dotted line 9-9 of Fig. 5.

Figure 10 is a view in section on a plane denoted by the dotted line IIl-III of Fig. 6'.

. In `the accompanying drawing the numerals II and I2 denote two case sections of the lock each `of which comprises substantially one-half of the case and which are formed to provide al chamber I3 when the twosections are secured together, as shown in Figs. 7 to l0, as by means of posts I4 which are reduced in size at their outer ends where they projectthrough the case sections, said reduced portions being riveted as at I5. Each `section may be provided with wards I6, II and I8 to engage notches in the edge of akey I9 as shown in Fig. 5, said wards being formed integrally with the case section and also to constitute bearings for turning movement of the key the wards II comprising ends of sections of a riby dividing the interior of the case into two compartments,

and the wards I8 creating a recess for'reception of the reduced tip of the key; as shown in Fig. 5.

Each of the case ysections isformed with a portion of a 'recess 2| for the end of the long arm 22 of the shackle, lthe short arm 23 of which enters through a hole 24 in theend of the case in a manner common to structures of this type. 25

The long arm 22 is provided with a recess in the form of a notch on one side of the arm,

the particular manner of forming this recess in.

fact creating recesses on opposite sides of the arm, one only, however, being used. vThese recesses are formed by a swaging operation in which the metal is forced out on opposite sides of the arm movement of the shackle is sufiicientto permit.

the short arm 23 to enter the hole 24 and to emerge therefrom for locking and unlocking action as will be readily understood. The recess 2| is located partially in each section of the case and a spring is confined in this recess and thrusts against the end of the long arm 22 of the .shackle to force the latter outwardly for unlocking movement, as shown in Fig. 6.

An important feature of the invention resides in the means for locking the shackle against movement with the short arm 23 thereof engaged within the hole 24, thereby retainingthe parts in locked conditio-n. To this enda fulcrum. 3I is formed on the bottom. of the 4case section I I and a', retainer in the form of a spring 32 is seated near one end upo-n this Afulcrum, as shown in Figs.

9 and 10. A spring conditioningv lug 33 projects from the case section I2 'inwardly within the case section II to engage one end of the spring, as shown in Fig. 9, thereby tilting the spring so that its opposite end is. engaged within the recess 25 in one side of the long arm of the shackle, as

sho-Wn inFig. 9, thereby locking the shackle against unlocking movement. When the key I8 is inserted into the lock through the key hole as shown in Figs. 5 and 9 and is turned to the position shown in Figs.v 6 and l0, the spring is depressed,l as shown in the latter gure, and removed from the recess 25 in, the shackle arm thereby releasing the latter which immediately moves outwardly under the influence of the spring 30 and disengages theushort arm 23 from the case. A key center 34 is located in grooves in yeach of the case members, as shown in Figs. 1 and 6, in a manner common to structures of this type.

I claim':

1. A lock comprising a case, a shackle including a long arm extending into said case, a recess* from said recess, means engaging said stop to limit both outward and inward movement of said shackle, and a locking member engaged within said recess to lock the shackle in place and positioned for operation by a key to release said shackle.

2. A lock comprising a case, a shackle including a long arm extending into said case, a recess formed in said arm by extrusion of metal thereof, a retaining lug composed of said metal extruded toV form said recess, and a locking member engaged Within said recess to lock the shackle in place and positioned for operation by a key to release said shackle.

3. A lock comprising a case, a fulcrum formed Within said case, a locking member resting on said fulcrum, a shackle including a long arm having a recess therein, and means for tipping said locking member on said fulcrnm to engage said recess, said locking member being positioned for engagement by a key to operate it to release said shackle.

4. A lock comprising a case', a f'ulcrum formed Within said case, a spring locking member resting on said fulcrum, a shackle including a long arm having a recess therein, and means for tipping said locking member on said fulcrum to engage said recess, said locking member being positioned for engagement by a key tov release it by spring action from said recess.

5. A lock comprising a case composed of two sections, a fulcrum formed in one of said sections, a locking member of spring metal resting on said 'fu1crum, a shackle comprising a long arm extending into said case and having a recess, and a lug on one section of the case to engage said locking member and tip it on its fulcrurn to engage said recess, said locking member being positioned for.

engagement by a key to release it from said recess.

LOUIS M. DYSON. 

